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Full Discussion: how to redirect back to stdout
Top Forums Programming how to redirect back to stdout Post 302288484 by Corona688 on Tuesday 17th of February 2009 10:40:58 AM
Old 02-17-2009
Doing this in C++ is the same as doing this in C since the system calls are all the same.

stdin is probably the same terminal, but since it's opened with the wrong file mode duplicating it won't work right. But you might be able to figure out what the terminal at least is:
Code:
$ ls -l /dev/fd/0
lrwx------ 1 monttyle monttyle 64 Feb 17 09:15 /dev/fd/0 -> /dev/pts/1
$

If you don't have that, try /dev/stdin or /proc/self/fd/0

You can retrieve the same info in your C/C++ program with the readlink() call, then open the terminal and re-duplicate it over stdout and stderr.

This, of course, won't work when stdin was never a terminal, so be careful to not let your program do crazy things when you pipe or redirect into it.
 

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LEARN ABOUT DEBIAN

obex_test

OBEX_TEST(1)							   User commands						      OBEX_TEST(1)

NAME

       obex_test - interactive test application for the openobex library

SYNOPSIS

       obex_test [[-s port] | [-r port] | [-i] | [-b [address] [channel]] | [-u interface]]

DESCRIPTION

       obex_test is a test application for the openobex library. It uses an interactive mode but the access method is selcted with command line
       arguments.

       This program is designed to be an example application for the openobex library.

OPTIONS

       -s
	   This is the default. It selects cable obex. The port argument is optional (default: /dev/ttyS0)

       -r
	   Select cable obex for the Ericsson R320 mobile phone. The port argument is optional (default: /dev/ttyS0)

       -i
	   Select obex over IrDA.

       -b
	   Select obex over bluetooth. Both, address and channel are actually optional. Default channel is 4, default address is ANY.

       -u
	   Select usb obex (CDC). If the interface argument is omitted, a list of available interface is written to stdout.

INTERACTIVE MODE
: COMMANDS
       c
	   connect to the remote side (client mode)

       d
	   disconnect from the remote side

       g
	   issue a GET request

       p
	   issue a PUT request

       q
	   quit the program

       s
	   go into server mode

       t
	   change the path on the remote side

       x
	   issue a PUSH request

AUTHOR

       Hendrik Sattler <post@hendrik-sattler.de>
	   initial version of manpage

openobex 1.4							    2008-11-23							      OBEX_TEST(1)
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